徐波 created DRILL-3501:
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Summary: No vector has initialized when the value of qualifier is
null while using Hbase storage
Key: DRILL-3501
URL: https://issues.apache.org/jira/browse/DRILL-3501
Project: Apache Drill
Issue Type: Bug
Affects Versions: 1.1.0, 1.0.0, 0.9.0
Reporter: 徐波
drill throws exception while querying from hbase：
Failure while reading vector. Expected vector class of
org.apache.drill.exec.vector.NullableVarBinaryVector but was holding vector
class org.apache.drill.exec.vector.NullableIntVector.
My sql:
select t2.A.A1, t2.A.B2 from hdfs.root.`table1` as t1 inner join hbase.`table2`
as t2 on table1.c1=t2.c1
Now the table2 has 3 regions and A.B2 on the last region is null while
containing values on the other regions. The node creates a NullableIntVector
while quering from the last region,but the nodes create a
NullableVarBinaryVector while quering from the other regions.So drill throws
Exception on the join node which get two type of vector for one column.
I recommend that we should initialize vector for selected columns in the
method named 'org.apache.drill.exec.store.hbase.HBaseRecordReader.setup'
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